You can use Tools -> Ping to test connectivity from the router itself (eg: to 8.8.8.8). Your Internet should still work and you should see activity on the PPP / LTE interface. You can test it by disabling your main Internet interface (eg: Cable / ADSL / Ethernet / whatever) temporarily (remember to turn safe mode on before you accidentally delete it!!). This will force the router to prefer your primary link over the 3G / LTE one.Īt this point we should have a working cellular interface. You should also set the default route distance to 2. However, you may still need to set an APN, username or password. If you have a newer and faster LTE / 4G modem, an LTE interface should automatically be created. The Status should change to waiting for packets…, then link established and finally connected. You may need to set an APN, username or password (check with your service provider for this information) dad’s using an Optus service so his APN is yesinternet. My dad’s modem is a 3G device, so he created a new PPP Client in Interfaces -> New -> PPP Client. If there’s nothing there, it may not be supported and you’ll need to find an alternative. My dad’s hAP has a full size USB port, so he just plugged it in.Ĭheck in System -> Resources -> USB for the modem you just connected. Plug the USB modem into the router’s USB portĭepending on your router you may need a USB adapter cable. Which has minimal documentation on the Internet. My dad is using a Huawei E1762 USB 3G modem. So double check it connects successfully in a more supported environment (eg: Windows laptop). If your modem doesn’t work, it will be a pain to troubleshoot on your router. Ensure your USB modem can connect to the Internet A supported USB 3G / LTE modem (see peripherals and supported hardware)Ġ.Unlike my holiday LTE setup, failover will be important: automatic will be preferred, but outages aren’t very frequent, so simple manual steps will be allowed. (And maybe help a few other people on the Internet as well)! Goalĭocument and configure my dad’s router to allow him to use a 3G / LTE USB modem as a backup Internet connection if his Optus cable connection fails. So I referred him to the article I wrote about using an Android device for 4G / LTE Internet access.Įxcept he was using a 3G USB Modem rather than an Android phone, so it didn’t quite work as nicely as I’d hoped. He runs a business from home, and extended Internet downtime is bad. I’d reviewed what he did and tweaked a few things.Īnd it’s been running quite smoothly since then.īut even the best router can’t do much when there’s no Internet to route! He had purchased a hAP, and configured it based on my Mikrotik home router article. I’d convinced my dad to replace an ageing (and occasionally faulty) router with a Mikrotik device a while back. Have you ever set up Mikrotik with 3G modem? Use a USB modem for backup Internet on a Mikrotik router.
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